Steam-boiler



(No ModeL) P. I. LYNCH.

STEAM BOILER.

Patented Mar. 31, 1885.

UNITED STATES PATENT EEICE.

PETER I. LYNCH, OF CORRY, PENNSYLVANIA.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 314,947, dated March31,1885.

Application tiled April 11, 1884. (No model.)

To all whom 1215 may concern.'

Beit known that I, PETER I. LYNCH, a citizen of the United States,residing at Corry, in the county of Erie and State of Pennsylvania,

' have invented certain new and useful Improvements in Steam-Boilers;and I do hereby declare the following to be a full, clear, and eX- actdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to the construction of steam-boilers,andparticularl y to that type of boiler which is known aslocomotive-bonen7 so called from its forni rather than its applicationor usc.

The invention relates, particularly, to the construction of thewater-ring at the bottom of the fire-box and boiler.

The invention is illustrated in the accompanying drawings, as follows:

Figure l is a vertical transverse section taken through the dome, thewagon-top, and the fire-boX. Fig. 2 is a vertical longitudinal sectiontaken through the same parts as are shown in Fig. 1. The two lines ofsection are at right angles to each other. Fig. 3 is a perspective viewof the water-ring. Fig. 4 shows an alternative construction ofthewater-ring.

A is the part of the boiler which is known as the wagon-top.77 A is thedome. B is the lire-box; C, the water-ring. D D, Snc., are braces orstays. a a are the mud-spaces; a a', the openings into the mud-spaces.

Heretofore the water-ring of boilers has been made with two iianges,each of which extended outward, one at the upper and the other at thelower side of the ring, thus giving its vertical section the appearanceof the letter U laid on its side-thus C-and the ring when in positionsat upon the wagon-top plates, and was sat upon by the fire-box plates,and therewere two rows of rivet-heads within the space between theflanges, and as this space was narrow and was part of the mud-space ofthe boiler, it was very difficult to clean out the sediment from aroundthe rivet-heads, and it was so difficult to put in these rivets that itwas the practice to make the lower curved part of the wagon-top of aseparate piece of iron and rivet it on first, and then rivet the mainpart of the wagon-top to it, thus making a seam along the side of theboiler, just above the mud-space.

I show two forms of water-ring, one with an upright part, o, and twoflanges, one of which, c', is an inner iiange, and the other, c2, is anouter iiange. The other form, that shown in Fig. 4, has but one flange,o', which is an inner iiange. I prefer the former forni, as it gives abetter mud-space, a, as will be seen by comparing Figs. l and 4.Otherwise the two forms are practically alike, as the most essentialfeature is the inner iiange, o. `This inner liange is essential,becauseit permits the rivets 2 2, &c., to be put in without being held from theinside of the boiler; or, in other words, the riveting of the wagontopplate to the water-ring is all outside work, and can be done much betterand much faster, and, further, there are no rivet-heads in themud-space. Both the flanges o' and c'l may turn in toward the center ofthe ring; but this is not essential, for the ring when as shown ineither figure may be riveted to the fire-box before it is put into thewagon-top, and so, oi' course, the workof putting in the rivets l l,Src., will be outside work, and the presence of rivet-heads along thetop of the mud-spaceis not objectionable. The water-ring, as hereinshown, may be made of Wrought-iron; but I ani in the habit of makingthem of nlalleableized cast-iron, and they may be made of oast-steel,and ofcourse they might be made of ordinary cast-iron, if inade strongenough to not break when the rivets were being headed.

By the use of my water-ring there is no difiiculty whatever inusing onesheet to form the sides and top of the wagon-top, all the riveting inthe ring being outside work, as explained above, and,besides, as beforestated, much time is saved, as inside work is much slower.

These water-rings may constitute an article of manufacture and trade, asthey can be made and sold to boiler-makers generally.

W'hat I claim as new is- In a steam-boiler, the combination, with thcplates A and B, of the water-ring C, having internal flange, o', andexternal fia-nge, c2, sub1 stantially as shown.

In testimony whereof I affix my signature in presence of two witnesses.

PETER I. LYNCH.

Witn esses:

C. B. ELY,

Isaac M. KENNEDY.

Sov

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